Machine for punching and setting fasteners in paper.



M. FREITAG.

MACHINE FOR PUNCHING AND SETTING FASTENERS IN PAPER.

APPLICATION FILED APR.22. I9I3- RENEWED SEPT. 19. 1916 1,239,382.

I TIE-(1.5. C

L Z p 44 M i w. r 1 M m m n. ,v m7.. )4 M M. FREITAG.

MACHINE FOR PUNCHING AND SETTING FASTENERS IN PAPER.

APBLIFATION FILED APR- 22, I913- .RENEWED SEPT. 19. l 9I6-,PatentedSept. 4,1917

2 SHEETS-SHEET 2.

.172 yen/Z02".

UNITED STATES PATENT GFFICE.

MAX AG. OE ete stemm- MACHINE FQIR'LPUNCI-IING AND SETTING. IN-EAPEI ta:

Application filednpril 22, .1913, Serial N 0,763,691

will reinforce suchsheets in a rapid and eiiicient manner.

Machines are, well known 1n wh1ch, clurmg a single revolution of theoperating crank the edge ofthe sheet is reinforced by having glued to ita reinforcing strip ,of paper which is subsequently punched. e

According to this invention metal fasten; ers are simultaneously appliedat one or more points'in the edge of one or more sheets of paper,theinetalfasteners and the paper clenched between them being then perQforated suitable punches forming part of. the machine, To this end themachine'com prises hollow riveting members or plungers havingperforating punches mounted within them, the plungers and punches beingeach carried by a separate "cross head operated by a common actuatingshaft.

By employing metal fasteners the edges of the paper are reinforced moreefliciently than when a strip of paper is used for the purpose, theunnecessary reinforcement out of the immediate neighborhood of thepunched holes is avoided.

In the accompanying drawings which show one form of machine inaccordance with this invention Figure 1 is a front elevation partly insection.

Fig. 2 is a section on the line A-B of Fig. 1.

Fig. 3 is a section on the line CD of Fig. 1, and

Figs. 4: and 5 show on an enlarged scale the fastening member in sideelevation and plan respectively.

The machine comprises a crank shaft 2, supported in suitable standards,provided with an operating lever 1 and having two cross-heads ortransverse members 3, 4, connected'to it by links. The lower cross-head4 carries hollow reciprocating plungers or riveting members 6 withinwhich are Specificationof Letters Patent,

Patented sept.4,' 191 7 Renewedsepternber 19, 1916. Serial No. 121 ,0 ,86 i disposed perforated punches b pivotally mounted on the uppercross-head 3. An: additional central plunger 7 is al s-n secured tothe'cross-head ff, the three plungers 6, 7 6

. 6 being guidedtin a portion S of theimachinie frame which lies abovethe work supportin'g table. Innnediately below the plungers 6 thelow-erpart 9 of the frame. holli nv:die10f 5 are. provided these diesbeing supported by sleeves 12 whichare forced, into contact with the'dies by means of spiral springsl l'3 en gaging a flange on the sleevesand adjust able'nuts 14L. A removable dish or cup :15". 7 0

is disposed below the bore (sure die, sleeve,

. and nut into which fall the aia' rmeaijaaa paperpunched out ofithepunches 5. i

Leading to the upper end of the'hollow die-1U is afeed chute-16 whichmay be'sur- '75 rounded by a hopper or chamber 17 iii-"Which the supplyof fasteners is held. H Immediately below the central plunger 7 is ayielding bolt 20 mounted in" a perforation 19 in the lower part 9 timemachine 0 frame, the stem 21 of this bolt being sur" rounded by a'spiral spring 23 aand having"; its-lower end guided ina nut '22. Thesprin g' 23 normally forces the'bol tJ20 upward so that a stop24eonitslowe r end engages the 35 nut 22. A pin25- secured to the frame '9extends into a slot 26 formed in the bolt and insures thelatter'assuining its correct are cal position, and prevents it rotatingwithin its guide. To the upper end of the bolt 20 is secured a head 27comprising a flat central portion 28 and two lateral members 29 whichare bent upward as shown in Fig. 3.

The paper 35 is placed upon the supporting table 37 which may be formedof polished wood or other suitable material and is guided into thecorrect position by its edge engaging a fixed stop 36 or one of threemovable stops 31 which are mounted on concentric sleeves 32 and can berocked by their actuating levers 30 to project through slots 33 in thetable 37.

The bent fasteners 18, as shown in Figs. a and 5, are of the clench typehaving proecting spikes 34: on one face adapted to engage correspondingopenings in the opposite surface.

The operation of the machine is as follows One or more sheets of paper35 are placed on the table 37, the edge to be reinforced engaging thestop 29 and the stop 36 tit the paper is of folio size) or one of theadjustable stops 31 (if it is of smaller size) engaging another edge ofthe paper and centering it correctly on the table. Fastening members 18are then fed into the guides and since the latter are perfectly smoothno obstacle is offered to the travel of the fasteners until they reachand straddle the paper 35. The operating lever 1 is then rotated,whereupon the central plunger is depressed and grips the paper betweenits under-surface and the head 28, the hollow plungers 6 simultaneouslydescending and clenching the metal fasteners to the edges of the paper.lVhile the plungers 6 are still in contact with the fasteners 18 and areholding them tightly continuous rotation of the shaft 9. causes thepunches 5 to descend and perforate the fasteners and the paper betweentheir two surfaces. The portions thus punched out fall through thehollow die 10, sleeve 12 and nut 14 to the dished plate 15 whence theymay be periodically removed.

Thus in a single complete revolution of the shaft 2 the fasteners aresecured to the paper and, together with the latter, are perforated. I

I claim 1. A machine of the character described, comprising means forfeeding a bent fastener into straddling engagement with a paper sheet,means for clenching the fastener to said sheet, and common means for.forming a continuous opening that extends completely through thefastener and sheet.

2. A machine of the character described, comprising means for feeding abent fastener into straddling engagement with a paper sheet, means forgripping the sheet, means for clenching the fastener to the sheet andcommon means for forming a continuous opening that extends completelythrough the fastener and sheet.

3. A machine of the character described, comprising a work table adaptedto support a paper sheet, a hollow plunger adapted to clench a fastenerto said sheet, and a punch movable within said plunger and adapted toform a continuous opening that extends completely through the fastenerand sheet.

4:. A machine of the character described, comprising a work tableadapted to support a paper sheet, an. adjustable stop for; said sheet, ahollow plunger adapted to clench a fastener to said sheet, and a punchmovable within said plunger and adapted to perforate both the fastenerand the sheet.

5. A machine of the character described, comprising a work table adaptedto support a paper sheet, a feed chute adapted to deliver a fastenerinto straddling engagement with said sheet, a plunger adapted to gripthe sheet, a hollow second plunger adapted to clench the fastener to thesheet, and a punch movable within said hollow plunger and adapted toperforate both the fastener and sheet.

In testimony whereof I have hereunto setmy hand in presence of twosubscribing witnesses.

MAX FREITAG. Witnesses:

ERNEST H. L. MUMMENHOFF, IDA Gnnrs'r HAFERMANN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

